Free Seminar!!! The Challenge of Gem and Jewelry Industry in the Disruptive Era
![](https://www.thaimediapr.com/wp-content/uploads/2019/09/Challenge-of-Gem-150x150.jpg)
The New Era of Gemstone and Diamond Standardization and Technology and Toward Responsible and Sustainable Gem and Jewelry Industry.
1
The New Era of Gemstone and Diamond Standardization and Technology and Toward Responsible and Sustainable Gem and Jewelry Industry.